Long and short brick network architecture: Role of water molecules acting as three-connecting spacers

Abstract

Crystallization of N-butyl-4-(3-(dimethylamino)-propylamino)-1,8- naphthalimide (1) from moist hexane affords the 1:1 hydrate, 1·H 2O, which exhibits a strong intermolecular hydrogen bonding network leading to a not so commonly encountered "long and short brick" architecture influenced by interspersed water molecules. In contrast, an analogous system, N-butyl-4-(2-(dimethylamino)-ethylamino)-1,8-naphthalimide (2), which crystallizes without the water molecule, does not display a long and short brick tiling pattern. © 2006 American Chemical Society.